mbr.h revision 1.13 
1/*	$OpenBSD: mbr.h,v 1.13 2014/03/07 21:56:13 krw Exp $	*/
2
3/*
4 * Copyright (c) 1997 Tobias Weingartner
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#ifndef _MBR_H
29#define _MBR_H
30
31#include "part.h"
32
33/* Various constants */
34#define MBR_CODE_SIZE 0x1BE
35#define MBR_PART_SIZE	0x10
36#define MBR_PART_OFF 0x1BE
37#define MBR_SIG_OFF 0x1FE
38
39
40/* MBR type */
41struct mbr {
42	off_t reloffset;
43	off_t offset;
44	unsigned char code[MBR_CODE_SIZE];
45	struct prt part[NDOSPART];
46	unsigned short signature;
47};
48
49/* Prototypes */
50void MBR_print_disk(char *);
51void MBR_print(struct mbr *, char *);
52void MBR_parse(struct disk *, char *, off_t, off_t, struct mbr *);
53void MBR_make(struct mbr *, char *);
54void MBR_init(struct disk *, struct mbr *);
55int MBR_read(int, off_t, char *);
56int MBR_write(int, off_t, char *);
57void MBR_pcopy(struct disk *, struct mbr *);
58
59/* Sanity check */
60#include <sys/param.h>
61#if (DEV_BSIZE != 512)
62#error "DEV_BSIZE != 512, somebody better fix me!"
63#endif
64
65#endif /* _MBR_H */
66
67